I called out the Ridley fans when they were making convoluted theories about the Pyrosphere shadow after the April Smash 4 Direct. I got dogpiled for it despite my seniority within the Ridley fanbase. I told them they were better off cheering on Bagan instead of believing Ridley was going to to be playable in Smash 4 Wii U (and this was after Smash 4 3DS was released), and that Bagan's work would at least provide a model to those neutrally aligned about Ridley to show the character could be re-sized and work within Smash Bros. Funny enough, Bagan's work actually was consistently used as proof that Ridley was workable within Smash Bros., while all those pushing the convoluted conspiracy theories were proven wrong (there were still idiots pushing Ridley was a link up bonus character up until Sakurai flat out came out and said he felt re-sizing Ridley would be against the character).
The people who are most often popular within a fanboy mob is the one who says the things people wish and want to be true. I do not like sugar coating things. I will say where and when hope can be inspired, but I also like to temper expectations and also point out where they are "chasing shadows". Sometimes my words crack like a whip, other times it can be soothing ointment. Regardless, I will call things as I see them, and right now the Waluigi fanbase needs to chill out. I might sound harsh, but maybe I might have been irked due to the character in question (who for most of the time I worked with speculation was seen as something of a joke). Times have changed I guess.
My point, however, is that (and do correct me if I'm wrong) you're painting the entire Waluigi fanbase in broad strokes, similar to how someone may have painted Ridley's despite you being proof of the contrary. I swear, it's always the purple characters.
In which he does nothing of importance. King K. Rool at least has major roles in each game he appears in. They may have been a decade ago but the fact that he's still around along with Sakurai making a Mii Costume is a testament to how much appeal he has as a character. If Waluigi disappeared for a decade, could you say the same thing?
Also, please source where K. Rool fans made death threats towards Sakurai.
It doesn't matter if he does "nothing of importance." Characters don't get into Smash based on in-universe feats. That's ridiculous. Sans Captain Toad, all of the mandatory-tier important Mario characters are in, but Waluigi is proof that there are still popular characters left.
Folks like Takamaru got Mii costumes as well, and yet he was still relegated to an Assist this time around despite his popularity. I don't see what makes this relevant.
A decade? It took him being missing from
a single game for people to be upset. His omission from Mario Kart 7, the subsequent outrage, and then him being confirmed practically immediately for Mario Kart 8 is pretty telling.
And I don't keep links to Twitter posts and YouTube comments made four years ago by internet trolls. But believe me, after Bayo got in there were definitely death threats pointed Sakurai's way on Twitter claiming the ballot was rigged and K. Rool was "the real winner."